Quantum network joins four people together for encrypted messaging

时间：2019-03-13 09:20:02166网络整理admin

Aeriform/Getty By Chelsea Whyte The quantum internet is starting small, but growing. Researchers have created a network that lets four users communicate simultaneously through channels secured by the laws of quantum physics, and they say it could easily be scaled up. Sören Wengerowsky at the University of Vienna and his colleagues devised a network that uses quantum key distribution (QKD) to keep messages secure. The general principle of QKD is that two photons are entangled,